<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>王者</title>
    <style>
        body {
            background-image: url(../images/王者背景图.jpg);
            background-attachment: fixed;
            background-repeat: no-repeat;
            background-position: center 0 ;
            
            
        }
        .box1 {
            width: 100%;
            height: 100px;
            
        }
        .box {
            width: 1000px;
            height: 100%;
            background-color: rgba(255,255,255,.3);
            margin: 0 auto;
        }
    </style>
</head>
<body>
    <div class="box1">
        <nav class="box">
            <div class="l"></div>
            <div class="r"></div>
        </nav>
    </div>
</body>
</html>